Turret-machine.



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TURRET MACHINE. APPLICATION FILED DEC. 2B. |911?.

Ptented Da. 17, 1918.

5 SHEETS-SHEET l.

Tiqgl? y Ja/.Enron David Wilson WoQd WITH/8858 Arm/Mfrs D. W. WOOD.

TURRET MACHINE.

APPLICATION FILED DEc.2s, IQII.

Patented Dec; 17, 1918.

5 SHEETS-SHEET 2- D. WI WOOD.

TURRET MACHINE. APPLICATION FILED nmza. 1917.

LzepL 111111111911 119111131918.

5 SHEETSQSHEET 3.

I f'I/I/E/I/onr David VVIlsorI Wood Armen/EVS D. W. WOOD.

TURRET MACHINE. APPLICATION min 0120.28. 191i.

Patented Dec. 17, 1918.

5 SHEETS-SHEET 4.

D. W. WOOD.

TURRET MACHINE.

APPLICATION FILED DEc.2s.I9I1.

1. ,218@935 l o Patend Dec. 17, 1918.

5 SHEETS-SHEET 5.

UNITED STATES PATENTz oFFIoE.

DAVID WILSON WOOD, O BRAZIL, INDIANA.

I 'runner-MACHINE.

of Brazil in the countyr of Clay and State of Indiana', have invented a new and Improved 'Iurret-Machine,l of which the following is a full, clear, and exact description. 1

The invention relates to lathes, .drillv presses, drillingmachines and similar ma-` chines using a turret and stop rods such, for instance, as shown and described in Letters Patent of the United States for a stop mechanism, granted to me November 6, 1917, No. 1,245,658.

The object ofthe invention is to provide a new and improved turret machine arranged to eliminate alllost motion in the revolving turret head especially' when doing heavy work. Another object is to allow free turmng of the turret head on the reciprocating slide. Another object is to hold the turret head against accidental turning even shouldthe operator fail to bind the head in place on theslide. A further object is to permit of taking up any wear of the turret4 head on its pivot pin without changing the alinement. Still another Objectis to extend the locking means for the turret head outward beyond the base of the tool to eliminate inaccuracy in turning the head from one posltlon to another and to insure correct locklngf the head' at each One-sixth turn of the ea v v With these and other objects in view, the invention consists of certain no'vel features ofvconstruction, as ,hereinafter shown and described and then 4specifically pointed out inthe claims. l l

A practical embodiment of the inventionl is represented in the accompanying drawings forming a part of this specification, in'

whichY similar characters of reference indi- I cate correspondin parts in all the views.Y

Figure 1 is a slde elevation of theturret- Y .head in positionon a slide-mounted to're# ciprocat'e on a saddle fixed to the bed ofthe machine on which the turret is used 1;

Fig. 2 is a rear end .elevation of .thefsamey Fig. 3 is'an enlarged sectional 'sideelevation of the same on the line 3-3vo'fjFig. 6; Fig. 4 is a similar view of the same on' the .line 4--4 of Fig. 6;

' g. 5 is simllar view of the same on the line A5--45of Fig. 6; Y

Fig. 6 is a cross section ofthe same on the/ 1ine66ofFig.3;

Specification of Letters Patent.

Patented ne. 17, '1918.

. f Application led December 28, 1917. Serial No. 209,290.

Fig. 7 is anvinverted-plan view ofthe turret head with they-pivot thereof in section" y Fig. s is a pian View @fthe Slide and Saddle with party of the slide'shown in section.

`Fig. 9 is a sectional side elevation of a modified form of the locking device for the turret head.-

On the bed 10 of a machine on which the 11, on which is mounted to-reciprocate a slide 12 having an angular face 13 on which is seated the bottom of a turret head, 14,

preferably made hexagonal, and provided at each side with a tool'seat or socket 15 for.

supporting a corresponding tool. In .order to impart a forward and backward sliding movement to the turret slide 12, use ismade cf a rack 20 attached to the turret slide (see Fig. 3) and extending lengthwise thereof. A pinion 21 is in mesh with the rack 20 and is secured on a transversely extending shaft 22 journaled' in suitable bearings varranged on the 'saddle 11. When the shaft 22 is turned forward and backward alternately in the usual manner then a forwardand backward sliding movement is iven toV the turret slide 1 2. As shown in t e drawihgs, Lthe shaft 22 is provided at one outer eird with a .driving wheel 23 adapted to be turned by the usual driving mechanism to impart an a1- ternate forward and backwardsliding movement to the sllde 12. .In order'to-provide an easy sliding movement of the turret slide 12,-

turret is used is adjustably fastened a saddle the saddle 11 is providedit'ith,-longitudif v nally extending .V-shaped guideways 25 engaged by correspondingly 'shaped'grooves 26 formed on the underside `of the slide v12 (seeFigs-2a11d 6)..

The turret head14 lis mounted to turn on a. pivot Ipin30Y provided :with a tapering Vportion31-1the lower part-of-Which fits into a' correspondingly .shaped bore 32 formed inthe slide ati-ight anglesto the face 13 'thereof'fl'sfee Fig.'3). A nut 33 screws on [the/lower.' threaded end 34 of the pivot pin p Blto fa'stenthe same in place inthe slide .12. On theupper part of the tapering portion '31 o'f the pivot pin .30 fits the conical portion of a bushing 35 -on which is mount. Y

ear wheel 37 ed to turn the hub 36 of a v secured by screws 38 or vot er fastening means to the under side of the turret head 14 (see Fig. 7). In case of undue wear between the contacting surfaces of the hub36 and the bushing 35 it isonly necessary on removal ofthe pivot pin and head 14 to drive the bushing a short distance farther up on the tapering portion 31 of the pivot pin to expand the bushin 35 sufficiently to insure again a snug t on the hub 3G. The head and its'pivot pin are then replaced in position on the slide 12, and it will be noticed that the same alineinent of the head 14 relative to the face 13 is maintained owing to the fact that the pivot pin is re-secured in the same position in the slide 12.

In order to relieve the pivot pin 30 of undue strain and to prevent lost motion when doing heavy work, the face 13 of the slide 12 is provided with an annular ll-shaped guideway engaged by a correspondingly shaped groove 41 formed in the bottom of the turret head 14. y'

The turret head 14 is usually bound in place on the face 13 of the slide 12 'by the use of the usual handle 50 terminating in a nut 51 screwing in the upper threaded end 52 of the pivot 30, the nut 51 abutting against a binding collar 53 to engage the top of the turret head 14. On turning the handle 50 in one direction, the turret head 14 is unclamped, and when turning it in an opposite direction the turret head 14 is firmly clamped in position on the face 13 of the slide 12. 1n order, however, to hold the turret head 14 against accidental turning even should the operator fail to turn the handle 50 with a view to clamp the turret head 14 in place, use is made of the following arrangement: .A ball race 60 is mounted inthe turret head 14 and is engaged by balls 61 which in turn are engaged by a ball race 62 screwing on the threaded portion 52 of the pivot 30. The ball race 62 is fastened in place by a nut 63 screwing on the threaded portion 52 of the pivot 30 and contained within the binding collar 53.

It is understood thatvin the ordinary type of turret lathe construction l the adjustment of the turret or theholding down scheme is by means of a nut on the center bolt and which isntightened against a flator taper plate and bears in a recess in the top of the turret. rIhis plate lbearing metal to metal face causes quite a bit of friction and is tion betweenv the turret and slide.

. By usinga ball 'bearing in place of the flat or taperl plate the", adjusting nut can be tightenedmuch more and not cause the head torevolve any harder than the flat or plain type, Aowing to the fact that the friction created-in theqtop bearing is reduced to a minimum andthe power required to overcome the Afriction of the common plain type caifnowf-bensedto o set the entra friction whichwascaused by increasing the pressure with `the Vadjusting nut.

llt can readily be seen that this turret is held to its seat by possibly twice the pressure of the average turret lathe and still be re.- volved as easily as the other makes.

If the operator neglects to tighten the top clamp handle at each vindexing this construction will take care of the average cut without bringing undue strain on the locking pin and center bolt because of the simple .reason that the turret is already rmly held against its seat and does not depend on the index mechanism to keep it from having a rotary motion.

The turretl head 14 during its return movement is given one-sixth of a turn by an arm 7 0 fulcrumed loosely on the shaft 22 and eX- tending with its free end into the path of one of the teeth of the wheel 37 attached to the under side of the turret 14 (see Figs. 5, 6 and 7). rlhe arm 70 is held in its normal position by a suitable spring 71 and during the forward movement of the slide 12 thefree end of the arm abuts against the under side of the top of the slide 12. The wheel 37 is in mesh with a pinion 80 secured to the forward end of a shaft 81 carrying a head 22 in which the stop rods 83 are adjustably secured in the usual manner, it being understood that one of the stop rods at the time is adapted to abut against a fixed lug 84 forming part of the saddl'ell to limit the forward sliding movement of the slide 12.

After the turret head 14 is given onesixth of a rturn by the arm 70 engaging the .wheel 37 the turret head is locked in place 93 in. which the rings 92 are located thus arranging the locking device beyond the sockets 15 for the tools to insure an accurate locking of the turret head 14 and eliminate inaccuraey'of the position of the tool relative to the work. The lower end of tlre. locking pin 90 is engaged by the forward end of a v lever 100 fulcrumed at 101 in a bracket 102 sometimes equaljto or greater than the fricattached by a screw or other means 103 to the slide 12. The rear end of the lever 100 is pressed on by a cap 104 mounted to slide in a recess 105 formed in the slide 12. A spring 106 engages the cap 104 and forces the saine downward and the spring rests with its upper end on a screw 107 screwed'nto the slide 12. The screw 107 is provided with a shank 108 extending into the opening of the spring 106 to hold the latter in central position relative to the cap 104. On the rear end of the lever 100 is mounted a roller 110 adapted to engage a cam 111, preferably of disk shape, with a portion cut out, as plainly 65 nects the saddle nagaat;

indicated in Fig. 4. The camlll is' mounted to turn on a stud 112 held in the saddle'll, and the cam -111 is pressed on by a spring 113 to hold the cam in the path of the roller 110. When the'slide12 moves rearwardly.

then the roller 110 comes Ain contact with the cam 111 whereby a swinging motion' t0 move another stop 83 into active position.

relative to the fixed lug 84. As soon as' the turret head 14 has been given'one-sixth of a revolution, then the locking pin 90 irrimediately snaps into the next following ring'92v to securely lock the.turret head 14 against i accidental turning during. the subsequent forward movement.-

lt is understood that during the forwardl movement of the slide 12 the friction roller 110 yrides over the ilat portion ofqthe cam 111 thus turning the latter a short distance to allow the friction roller to pass. When 'this has been done the cam 111 is returned 30 to its normal. position by its spring 113 to again act on the roller 110 at the next rel. turn or forward movement of the slide It is also understood that the spring 106 is strongerV than the spring 113 and conseh-quently the pin 90 1remains in locking position during the return movement of the slide 12 and whilethe roller 110 turns the cam 111. l ln the modiliedform of the turret head 40 locking device shown in'Fig. 9, the locking pin 200 is mounted to-slide in a bushing 201 attached to the forward end of the slide 202 onwhich the turret head 203 is mounted to turn. The upper tapering end of the locking pin 200 engages one of a series of rings 204 fastened -in the bottom of the turret head 203,o'ne for each side thereof. Ilhe lower end of the locking pin 200 is engaged by the forward end of a lever 205 fulcrumed atv 206 onthe slide'202. The rear end of the lever -205l is pressed on by the lower end of a spring 207 abutting with its upper end against an adjusting screw 208 screwing in the slide 202 to permit of regu- 50 lating the tension of" the spring 207. The rear end of the lever 205 is provided with a cam 210 engaging a trip pin 211 held on a latch 212 lfulcrumed at 213 on the saddle 214. The latch 212 is pressed upward byv a .50 spring 215 and the free forward end of the latch 212 is .adapted to engagea shoulder 216` formed on the trip dial 217 having a shaft 218 journaled in suitable bearings arranged on the saddle 214. A spring 219 con- 214 with the trip dial 217 to hold` the latter against a stop pin 220 hav-` ing a threaded portionl 221 vscrewing in the saddle'2l4 to permit of adjusting the stop pin 220. The cam 210v is V-shaped at the Y underside and the forwardend of the cam terminates inan abrupt shoulder 222. to 'allow a quick return swinging motion of the lever 205.

When the slideA 202 mo'ves forward, thev locking pin 200 is in locking position in one of the rings 204 to hold the turret head 203 against tu'rningl When the slide 202 moves rearward -then the cam 2100i the lever 205 comes in contact with the trip dial 217 whereby a swinging motion is given to the lever 205, and the latter now withdraws the locking pin 200 from the ring 204 to allow turning of the turret head 203, as above explained. It is understood that the trip dial 217 is held against turning in one direction by the latch 212 and in the opposite direction by the stop pin 220 during the time a swinging motion is given to the lever 205, as above explained, and when the .slide finally reaches its rearmost position the abrupt shoulder 222 of the lever 205 drops out of engagement with the upper end of the trip dial 217, and a quick `return swinging motion is now `given to the lever 205 by the action of the spring 207 to engage the lock` movement. Whenv the slide 202 moves into rearmostposition, as shown in Fig. 9, the

cam end 210 of the lever 205 presses the'pin 211 downward whereby the latch 212 is isengaged from the trip dial 217 and the latter isnow free to swing forward,l asyindicated by the arrow, by the action of the' lever 205 without disturbing the position of the said l lever 205.

From the foregoing' it will be seen that by this automatic locking mechanism, the

locking pin on being disengaged from the turret head cannot scar the bearing face of' the turret head. lt will also be noticed that 'when the bushing 201 and the ring 204 are in register and the trip dial 217 is released by the latch 212, and the shoulder 222 is freeof the trip dial 217, then the spring 207 can exert its full power to swing the lever 205 back and to re-engage the locking`pin.,

200 with a ring 204.

Having thus described my invention, I: claim as new and desire to-'secure by Letters 1. In a turret machine, a slide provided with a pivot pin having a threaded dstem, aturret head mounted to turn on the said ,pivot pin, a hollow binding collar on the turret and through which the threaded stem of the pivot pin projects, a ball'bearing having ball races with balls intermediate the races, one of the ball races being Yheld on the said turret head and the other ball race fitting on the said stem, and a nut screwing on the said stem in the binding collar and bearing against the ball race held thereon.

2. In a turret machine, a saddle provided with a stop, a slide on the saddle, a turret head mounted to turn on the slide and provided on its underside with a gear wheel, a shaft mounted in the slide and having a pinion engaging the gear wheel, a stop head carried by the shaftl and provided with stop .rods for engaging the stop of the saddle,

and means for rotating the turret head upon the rearward movement of the slide.

3. ln a turret machine, a saddle provided with a stop, a slide mounted to slide forward and backward on the said saddle, a turret head mounted to turn on the said slide and provided on its under side with a gear wheel, a stop head mounted to'revolve on the said slide and provided with stop rods, a shaft carrying the said stop head and provided with a pinion in mesh with the said gear Wheel, and a stationary arm adapted to be engaged by the said gear wheel on the slide moving into rearward position to rotate the gear wheel and with it the said turret head and the said stop head.

a. in a turret machine, a saddle provided with a stop, a slide mounted to slide forward and backward on the said saddle, a turret head mounted to turn on the said slide and provided on its under side with a gear wheel, a stop head mounted to revolve on the said slide and provided with stop rods, a shaft-carrying the said stop head and provided with a pinion in mesh with the said gear wheel, a rack on the said slide, a

into the path of the said gear wheel on the turret head.

5. In a turret machine, a saddle provided with va stop, a slide mounted to slide forward and backward on the saidQ saddle, a turret head mounted to turn on the said slide and provided on its under side with a gea-r wheel, a stop head mounted to revolve on the said slide and provided with stop rods, a shaft carrying the said stop head and providedfwith a pinion in mesh with the said gear wheel, a rack on the said slide, a pinion in mesh with the said rack, a pilot shaft carrying the said pinion and journaled in the said saddle, and a springpressed arm fulcrumed loosely on the said pilot shaft Yand extending with its free end into the path of the said gear wheel von the turret head, the free end of the said arm being adapted to abut against the under side of the top of the slide during the forward movement thereof,

naeeeei 6. ln a turret machine, a saddle, a slide mounted to reciprocate on the said saddle, a

. move the locking pin-out of engagement with the turret head, and means controlled by the lever for holding the trip dial stationary at the time it imparts a swinging movement to the lever- 7. in a turret machine, a saddle, a slide mounted to reciprocate on the said saddle, a turret head mounted to turn on the said slide, a locking pin mounted to slide on the said slide and adapted to engage and lock the said turret head against turning during the forward movement of the slide, a spring actuated lever fulcrumed on the slide and engaging the said locking pin, the rear end of the lever being provided with a cam and with an abrupt shoulder, a trip dial mounted to swing on the said saddle and adapted to be engaged by the said cam and the said shoulder of the said lever to impart a swinging motion to the lever and therebyr move the locking pin out 0f engagement with the turret head and to allow a quick return Yswinging motion of the lever after the turret head is turned to again engage the looking pin with the turret head, and means controlled by the lever for holding the trip dial stationary at the time it imparts a swinging movement to the lever.

8 in a turret machine, a saddlea slide mounted to reciprocate in the said saddle, a turret head mounted to turn on the said slide, a spring actuated locking pin mounted to slide on the said slide and adapted vtoi engage and lock the said turret head against turning during the forward movement of the slide, a lever fulerumed on the slide and engaging the said locking pin, the rear end of the lever being provided with a cam and with an abrupt shoulder, a trip dial mounted to swing on the said saddle and 4.adapted to be engaged by the cam and the said shoulder of the said lever to imparta swinging motion to the lever and thereby move'the locking p in out of engagement with the turret head and to allow a quick return swinging motion of the lever after the turret head is turned to again engage the locking pin with the turret head,

and a spring pressed catch for the said tripk .dial and mounted on the said saddle, the

said catch being adapted to be engaged by the cam of the `said lever to vmove the catch out of engagement with the trip dial.. 7

' 9. ln a turret machine, a saddle, a slide mounted to reciprocate on the said Saddle, a turret head mounted to turn on the said slide, a spring actuated locking pin mounted to slide on the said slide and adapted to engage and lock the said turret head against turning during the forward movement of the slide, a lever ulcrumed on the slide and engaging the said looking pin, the rear end of the lever being provided with a cam and with an abrupt shoulder, a trip dial mounted to swing on the said saddle and adapted to be engaged by the cam and the said shoulder of the said lever to impart a swinging motion to the lever and thereby move the locking pin out of engagement with the turret head and to allow a quick return' swinging motion of the lever after the turret head is turned to again engage the locking pin with the turret head, and a stop pin adjust-ably mounted on the 2o said saddle and engaging thesaid trip dial.

DAVH) WILSON WOOD. 

